Floribunda rose plant named ‘Poulcas043’

ABSTRACT

A new garden rose plant of the Floribunda class which has abundant, white flowers and attractive foliage. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.

Botanical designation: Rosa hybrid.

Variety denomination: ‘Poulcas043’.

SUMMARY OF THE INVENTION

The present invention constitutes a new and distinct variety of gardenrose plant which originated from a controlled crossing between thefemale seed parent, an unnamed seedling, and the male pollen parent,also an unnamed seedling.

The two parents were crossed during the summer of 2000 and the resultingseeds were planted in a controlled environment in Fredensborg, Denmark.The new variety, named ‘Poulcas043’, originated as a single seedlingfrom the stated cross.

The new variety may be distinguished from its male pollen parent andfemale seed parent by the following characteristic. The female seedparent and the male pollen parent have light pink flowers, while the newplant has white flowers.

The objective of the hybridization of this rose variety was to create anew and distinct variety for garden use with unique qualities, such as:

-   -   1. Uniform and abundant white flowers;    -   2. Vigorous, but compact growth when propagated both as a budded        rose and on its own roots;    -   3. Exceptional disease resistance.

This combination of qualities is not present in previously availablecommercial cultivars of this type, known to the inventor, anddistinguish ‘Poulcas043’ from all other varieties of which we are aware.

As part of the rose development program, Mogens N. Olesen germinated theseeds from the aforementioned hybridization during winter of 2000 andconducted evaluations on the resulting seedlings in a controlledenvironment in Fredensborg, Denmark. ‘Poulcas043’ was selected in thespring of 2001 by the inventor as a single plant from the progeny of theaforementioned hybridization.

Asexual reproduction of ‘Poulcas043’ by traditional budding and rootedcuttings was first done by Mogens N. Olesen in the nursery inFredensborg, Denmark in July, 2001. This initial and other subsequentasexual propagations conducted in controlled environments havedemonstrated that the characteristics of ‘Poulcas043’ are true to typeand are transmitted from one generation to the next.

DESCRIPTION OF THE DRAWING

The accompanying color illustration shows as true as is reasonablypossible to obtain in color photographs of this type, the typicalcharacteristics of the buds, flowers, leaves, and stems, of‘Poulcas043’.

Specifically illustrated in FIG. 1 are open flowers, petals detached,and flower buds.

FIG. 2 shows leaves, stems, and a flowering branch.

Plants shown are 2 years of age.

DETAILED DESCRIPTION OF THE VARIETY

The following is a description of ‘Poulcas043’,as observed in its growthin a field nursery in Marion County, Oreg. Observed plants are 2 yearsof age, and were grown on their own roots. Observed plants are 3 yearsof age, and were grown on Rosa multiflora understock. Color referencesare made using The Royal Horticultural Society (London, England) ColourChart, 2001, except where common terms of color are used.

For a comparison, several physical characteristics of the non-patentedrose variety ‘Korbin’, are compared to ‘Poulcas043’ in Chart 1.

CHART 1 ‘Poulcas043’ ‘Korbin’ Petalage about 65 about 25 Flower Diameter70 mm 60 mm Fragrance None Strong

Flower and Flower Bud

-   Blooming habit: Continuous.-   Flower bud:    -   -   Size.—Upon opening, 30 mm in length from base of receptacle            to end of bud. Bud diameter is 15 mm.        -   Bud form.—Ovoid.        -   Bud color.—As sepals divide petals are White Group 155A with            intonations of Yellow-Green Group 145C.        -   Sepal inner surface.—Color: Yellow-Green Group 144B.            Surface: Lightly pubescent.        -   Sepal outer surface.—Color: Yellow-Green Group 144A with            intonations of Greyed-Purple Group 187C. Texture: Smooth.        -   Sepal shape.—Apex: Cirrhose. Base: Flat at union with            receptacle.        -   Sepal margin.—Margins have weak foliaceous appendages on            three of the five sepals.        -   Sepal size.—32 mm long, 10 mm wide.        -   Receptacle.—Texture: Smooth. Size: 10 mm in height, 7 mm            wide. Color: Yellow-Green Group 144A with intonations of            Greyed-Purple Group 187C. Shape: Elongated campanulate.        -   Pedicel.—Surface: Smooth. Length: 35 mm. Diameter: 3 mm on            average. Color: Yellow-Green Group 146D with intonations of            Greyed-Red Group 181A. Strength: Strong.        -   Peduncle.—Length: 5 to 15 cm. Diameter: 4 mm. Color:            Yellow-Green Group 145A with intonations of Greyed-Red Group            181A.-   Flower bud development: Flower buds are borne in panicle like    clusters of 3 to 5 flower buds on each peduncle.-   Flower bloom:    -   -   Fragrance.—None.        -   Duration.—The blooms have a duration on the plant of            approximately 14 days. Petals fall cleanly away from plant            after flowers have fully matured.        -   Size.—Flower diameter is 70 mm when open. Flower depth is 35            mm.        -   Flower shape.—Rosette double flowers with many slightly            overlapping petals of different sizes.        -   Shape of flower, side view.—The upper portion is flat. The            lower portion is concave.-   Petalage: Under normal conditions, flowers have 65 petals total, 7    to 10 of which are petaloids.-   General tonality of flower: Open flowers are White Group 155D.-   Petal color:    -   -   Upon opening, outer & inner petals.—Upper surface: White            Group 155D. Lower surface: White Group 155D.        -   Basal petal spots.—No distinctive coloration at the petal            base observed.        -   After opening, outer & inner petals.—Upper surface: White            Group 155D. Lower surface: White Group 155D.        -   Basal petal spots.—No distinctive coloration at the petal            base observed.-   Petals:    -   -   Petal reflex.—Flat.        -   Margin.—Entire and uniform. Moderate undulations.        -   Shape.—Generally rounded. Apex shape: Rounded. Base shape:            Rounded.        -   Size.—40 mm (l)×40 mm (w).        -   Texture.—Smooth on upper and lower surfaces.        -   Thickness.—Average.-   Petaloids:    -   -   Size.—17 mm (l) by 8 mm (w).        -   Quantity.—7 to 10.        -   Shape.—Elliptic. Base and apex are acute.        -   Color.—White Group 155D.-   Reproductive organs:    -   -   Pollen.—None observed.        -   Anthers.—Size: 2 mm in length. Color: Yellow Group 6A.            Quantity: 40 on average.        -   Filaments.—Color: Yellow Group 4D. Length: 11 mm.        -   Pistils.—Length: 5 mm. Quantity: 15 on average.        -   Stigmas.—Color: Green-White Group 157A.        -   Styles.—Color: Green-White Group 157A.        -   Location of stigmas.—Inferior in location relative to the            length of the filaments and the height of the anthers.        -   Hips.—None Observed.

Plant

-   Plant growth: Upright, bushy. Plants are 100 to 120 cm in height,    and 100 cm wide.-   Stems:    -   -   Color.—Juvenile growth: Yellow-Green Group 144B with            anthocyanin the color of Greyed-Orange Group 173B. Mature            growth: Yellow-Green Group 144A.        -   Length.—On average, canes are 60 cm from the base of the            plant to the flowering portion.        -   Diameter.—8 mm.        -   Internodes.—On mature canes, there is an average distance of            30 mm between nodes.        -   Surface texture.—Young wood: Smooth. Older wood: Smooth.-   Long prickles:    -   -   Incidence.—10 prickles per 10 cm of stem.        -   Size.—Average length of prickles on mature stems is 9 mm.        -   Shape.—Upper portion is linear. Lower portion is concave.        -   Color.—Juvenile prickles: Greyed-Orange Group 173B. Mature            prickles: Greyed-Red Group 180B.-   Plant foliage:    -   -   Compound leaf.—180 mm (l)×111 (w).        -   Quantity.—3 leaves per 10 cm of stem on average.        -   Leaf bearing angle to the stem.—45 degrees.        -   Color of juvenile foliage.—Upper side: Yellow-Green Group            146C with intonations of Greyed-Red Group 181A. Lower side:            Yellow-Green Group 146C with intonations of Greyed-Red Group            181A.        -   Color of mature foliage.—Upper side: Yellow-Green Group            147A. Lower side: Yellow-Green Group 146B.-   Plant leaves and leaflets:    -   -   Stipules.—        -   Size.—30 mm long, 3 mm wide.        -   Quantity.—2 per compound leaf.        -   Shape.—Linear, slightly broad based with outward extending            apices.        -   Margins.—Finely serrated.        -   Color.—Yellow-Green Group 147A.-   Petiole:    -   -   Length.—40 mm.        -   Diameter.—2 mm.-   Upper surface:    -   -   Color.—Yellow-Green Group 146B.-   Lower surface:    -   -   Color.—Yellow-Green Group 144B.-   Rachis:    -   -   Length.—70 mm.        -   Upper surface.—        -   Color.—Yellow-Green Group 146B.-   Lower surface:    -   -   Color.—Yellow-Green Group 144B.        -   Observations.—Small prickles Greyed-Red Group 179B.-   Leaflet:    -   -   Quantity.—Normally leaflets.        -   Margins.—Dentate.        -   Size.—On average terminal leaflets are 55 mm long, 40 mm            wide.        -   Shape.—Generally elliptical somewhat deltoid. Base: Rounded.            Apex: Cuspidate.        -   Texture.—Smooth on upper and lower surfaces.        -   Thickness.—Average.        -   Arrangement.—Odd pinnate.        -   Venation.—Reticulate.        -   Glossiness.—Very glossy.-   Disease resistance: Above average resistance to powdery mildew    Sphaerotheca pannosa, downy mildew Peronospora sparsa, rust    Phragmidium sps., black spot Diplocarpon rosae, and Botrytis cinerea    under normal growing conditions.-   Cold hardiness: The variety is tolerant to USDA Cold Hardiness Zone    6.-   Heat tolerance: The variety has been found to be suitable for    climate conditions found in the American Horticulture Society heat    zone 7.

I claim:
 1. A new and distinct variety of rose plant of the Floribundarose class named ‘Poulcas043’, substantially as illustrated anddescribed herein, due to its abundant white flowers, disease resistance,and extended period of bloom.